Refactoring: Get rid of isDocument() check in EventTarget.

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 1011 matching lines @@
 
     const Document* templateDocument() const;
     Document* ensureTemplateDocument();
     void setTemplateDocumentHost(Document* templateDocumentHost) { m_templateDocumentHost = templateDocumentHost; }
     Document* templateDocumentHost() { return m_templateDocumentHost; }
 
     void didAssociateFormControl(Element*);
 
     virtual void addConsoleMessage(MessageSource, MessageLevel, const String& message, unsigned long requestIdentifier = 0);
 
+    virtual DOMWindow* browsingContext() OVERRIDE { return domWindow(); }

[abarth-chromium, 2013/08/09 16:25:53]

This terminology doesn't match the HTML5 spec.   The term "browsing context" in
the HTML5 spec corresponds to Frame in Blink.

+    virtual void userEventWasHandled() OVERRIDE { resetLastHandledUserGestureTimestamp(); }
+
     PassRefPtr<FontLoader> fontloader();
     DocumentLifecycleNotifier* lifecycleNotifier();
 
     enum HttpRefreshType {
         HttpRefreshFromHeader,
         HttpRefreshFromMetaTag
     };
     void maybeHandleHttpRefresh(const String&, HttpRefreshType);
 
 protected:
@@ skipping 362 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == documentInternal();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h